Hello, I’ve been getting back into Blender after a long hiatus and was following Andrew Price’s donut tutorial when I apparently screwed something up.
I’m working on an older Win 7 machine with a 16 gigs of ram, an i7 4790K and a 6 gig nVidia Geforce 1660 card. Blender version 2.91.
Now, I had actually done the tutorial once and finished it, and everything was fine. I decided to do it from scratch again to try and ingrain some of the processes.
So I got as far as making the cup and saucer when I notice that I was getting ambient light in the Cycles preview in the Layout tab. It was also overtly bright. When I hit F12 it rendered normal, but in Layout rendered view it was overtly bright and had an ambient skylight cast.
So I futzed around with settings, not knowing what I’m doing of course, and hit F12 and render was normal, but when I went to rendered view in Layout, it rendered blank and got and error message that read:
(1) Scene Collection | Camera
OPTIX_ERROR_CUDA_ERROR in optixDenoiserComputerMemoryResources(denoiser, rect_size.x, rect_size.y, &sizes) (device_optix.cpp:925)
So I hit F12 again and also got a blank screen and an error message the read:
Frame:1 | Time:00:00:49 | Mem:979.88M (Peak 1162.16M) | Failed to create CUDA context (illegal address)
This is weird because I don’t have Optix activated in preferences.
If I restart Blender I could initially get a render out of F12, but as soon as I tried Cycles rendered mode in Layout the whole process repeated. I also noticed in the initial F12 render that anything outside the live area was rendered black.
In the backup files I managed to find a copy that was still working but had the ambient in Cycles view. I noticed if I turned the LookDev render off by setting the Strength to zero, the Cycles view in Layout was normal again, but I had no LookDev mode.
Opening up the first, finished tutorial, everything was fine. So the hardware and Blender are working properly. I obviously managed to accidentally change some setting, and needless to say, I have no idea what I did.
So if anyone knows what I botched up, please let me know, as it’s brought this project to a halt.
Thanks for any help with this.